Internal-combustion engine.



c. H. SERGEANT. INTERNAL COMBUSTION ENGINE.

APPLICATION IIILED 00113, 1908.

Patented Aug. 24,1909.

CHARLES 1-1.. SERGEANT, OF HEW YORK, N. Y.

INTERNAL-COMBUSTION ENGINE.

To all whom it may concern:

Be it known that I, CHARLES H. SERcnAn'r, a citizen of the United States of America,

and a resident of New York, county of New York, State of New York, have inventedcertain new and useful Improvements in Internal-Combustion Engines, of which the following is a specification, reference being had to the accompanying drawings, forming a part thereof.

My invention relate: to improvements in mternal combustion engines, and partlcu natural circulation because the upper end is very much hotter than the lower, and hence the water, in heating, is given a tendency to rise and thus to circulate in the manner desired.

In the type of engine in which a nozzle is employed for injecting fuel oil, it is highly desirable that such nozzle be kept reasonably cool, but this nozzle is. necessarily located at or near the upper end of the cylinder, and hence at the hottest part thereof. Furthermore, in the circulation of cooling medium as just described, such cooling medium has itself become considerably heated before it reaches the portion surrounding the nozzle and hence it has less capacity to take up heat at this point.

In my present invention, I admit the cooling medium first aroundthe nozzle so as to obtain the greatest cooling eifect possible at this point. Thereafter 1 conduct the cooling medium directly to the lower end of the circulation has been cominqliiieretofore by permitting the cooling medium to flow up and around the cylinder until it is finally discharged at,the upper end thereof. The result ,ofithis is that the nozzle is kept cool, yet "there is niit jsuiiicient heat imparted to the cooling means to prevent or impede the i atural circulation caused by permitting th cooling medium .to fiow thereaften upwar around the cylinder from the lower cooler portion to the upper hotter part. a

In order that my invention may be fully understood, I will now proceed to describe Specification of Letters Patent. Patented Aug. 24:, 1909.

Application filed October 13, 1908.

Serial No. $57,502.

an embodiment thereof, having. reference to the accompanying drawings illustrating same, and will then point out the novel features in claims.

In the drawings: Figure 1 is a View in exterior elevation of certain arts of an internal combustion engine inc uding the cylinder and nozzle thereof,'the same being constructed iii accordance'with my invention. Fig. 2 is' a view in central vertical section 'therethrough, the point of gVieW of Fig. 2 being taken at right angles to the point of view of Fig. 1-.

Reference character 3 designates the cylinder of an internal combustion engine, the upper or working portion of which is surrounded by a jacket 4. 5 is the upper head, the central portion of which is formed into a dome (3. A fuel injecting nozzle 7 is located at the upper end of the cylinder, being, in the present instance, introduced through an opening in the upper head 5. The head 5 is provided with a jacketed por.-' tion, said portion inclosing a chamber 8 of said jacketed portion, said pipe connection opening into the chamber 8, and at'its I the upper end of the chamber 3. This passage 11 is connected by means of a pipe connection 12 with the inlet port 13 of the chamber 14 which is inclosed by the jacket 4, and the said jacket 4 is provided with; a pipe connection 15 at its upper endthrough which water which has been employed as a cooling medium may be discharged.

. In operation, water is admitted through the pipe connection 9 in the direction of the arrow shown, such cooling medium passing Ainmediately into the chamber 8 around the cylinder, and thus permit the same natmal' nozzle 7 whereby to thoroughly cool the said nozzle 7 and to keep the same in a 0061 con dition. This cooling medium then' passes through the passages 10 and 11 and along the pipe connection 12 into the cylinder cooling chamber I 14, being admitted thereto through the admission. ort'13 at the lower end thereof. The coo ing medium passes charged through the pipe connection 15 at the upper end of the said chamber.

What I claim is:

1. In an internal combustio engine, the

.80 which surrounds the said nozzle 7 A pipe connection 9 is provided at the upper endthence upward through the chamber 14, around the cylinder 3, and is finally discombination with a cylinder and a water jacket therefor, of a fuel nozzle arranged at the upper end of the cylinder, a Water jacket for the said nozzle, means for admittin cooling medium to the said nozzle Water jac (6t, and means for conveying it thence to. the opposite end of the cylinder jacket whereby it may return'through the cylinder jacket in a direction toward the end of the cylinder at which said nozzle is' located.

2. In an internal combustion engine, the combination with a cylinder and a Water jacket therefor which incloses a chamber around the cylinder, of a fuel nozzle arranger] at the upper portion of the cylinder,

:1 water jacket for the said nozzle, means for admitting water first to the said nozzle jacket, anda passage independent f the said water jacket chamber of the cylinder for conveying the said water theme to sub- :20

CH ARLES H. SET 1 E AN '1.

Witnesses D. Howann Harwoon, LYMAN L. Anniusws, J r. 

